Septic tricamerale concrete C28/35, capacity 9.9 cubic enabled for up to 33 people (with supplied water 300 liters / person) according to UNI EN 12566-1, complete with pipes DN150 INPUT-OUTPUT pre-assembled PP (polypropylene), and secured to the system by means of flexible seals in SBR (Styrene Butadiene Rubber) to seal 0.5 bar, able to absorb small adjustments of the soil. The system is constructed with materials resistant and suitable for use in an environment of domestic wastewater. The plant is equipped with hooks tested "disposable" for the handling and laying, and 25 kg of cement glue suitable for laying slab and manhole. In case of necessity technique, the system is eventually supplied in individual elements of maximum weight each kg 1,300. In this case, the pit must be installed by qualified staff. On request we are able to provide the system with performance liquid counterclockwise, and / or pipes with entry-exit angle varied.